Analytical study of orbital selective Mott transition using slave-spin method

POSTER

Abstract

We study the orbital selective Mott transition using slave-spin and slave-boson techniques. Within a single-site approximation, we identify the competing ground states of the spin-sector of a two-band Hubbard Hamiltonian in presence of the Hund’s rule coupling as well as inter-orbital tunneling and provide an analytical explanation for the orbital correlation (mode locking) and Kondo physics. By mapping the lattice to the impurity model we make connections to the dynamical mean-field theory.

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Authors

  • Yashar Komijani

    • Center for Materials Theory, Rutgers University
    • Rutgers Univ

  • Gabriel Kotliar

    • Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854
    • Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08856-8019, USA
    • Rutgers University
    • Center for Materials Theory, Rutgers University
    • Rutgers University, New Jersey, USA